What do the directions say?? they should tell you exactly what the lines mean.
If the test doesn't show up like the directions say (in your case a single blue line) the test should be considered invalid. It's best to take another test to be sure.
I've never used that test, but have heard that the tests with pink dye tend to be more reliable/easier to interpret than the blue dye ones... They sell basic pink dye ones at the Dollar Tree if you have any nearby - they have never led me astray. Good luck!
So I retested this morning &.....got my BFP!!!!!! We r so excited :) Halloween Baby!! <3
congrats on the BFP wishing you and ur hubby a happy healthy nine months :)
im soo pleased for u congrats x
Congrats lovely thats awesome :))